Blender – Angle Tool is an efficient tool for design and modelling. It can quickly create corner geometry based on the user’s cross-section selection in Edit Mode. Essentially, any part of the mesh can be selected, an Active Edge specified, and then the user is free to rotate geometry around the edge to generate exact corners.

z01ks000 – Angle Tool Blender Addons Feature

• Quick Corner Maker: It helps you create corners in record time.
• It’s easy to Use: Just select a piece of your shape, select a special edge, and let the tool do its magic!
• No More Extra Steps: Set aside actions to make corners, as this is an easier way.
• Extra Fun with Curves: You can create fun curved corners now.

Blender – Angle Tool Documentation

Image 1: Generate this type of geometry on the fly and skip the extra steps.

Image 2: Features include the Curve Mode.